# HTTP -> HTTPS 重定向
server {
    listen 80;
    server_name notify.example.com;  # 替换为你的域名

    # Let's Encrypt 证书验证
    location /.well-known/acme-challenge/ {
        root /var/www/certbot;
    }

    location / {
        return 301 https://$host$request_uri;
    }
}

# HTTPS 主配置
server {
    listen 443 ssl http2;
    server_name notify.example.com;  # 替换为你的域名

    # SSL 证书配置（Let's Encrypt）
    ssl_certificate /etc/letsencrypt/live/notify.example.com/fullchain.pem;
    ssl_certificate_key /etc/letsencrypt/live/notify.example.com/privkey.pem;

    # SSL 安全配置
    ssl_protocols TLSv1.2 TLSv1.3;
    ssl_ciphers ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384;
    ssl_prefer_server_ciphers off;
    ssl_session_cache shared:SSL:10m;
    ssl_session_timeout 1d;

    # 安全头
    add_header X-Frame-Options "SAMEORIGIN" always;
    add_header X-Content-Type-Options "nosniff" always;
    add_header X-XSS-Protection "1; mode=block" always;

    # 请求体大小限制（用于文件上传）
    client_max_body_size 10M;

    # API 请求代理到 backend (4000)
    location /api/ {
        proxy_pass http://127.0.0.1:4000/api/;
        proxy_http_version 1.1;
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;

        # WebSocket 支持（如果需要）
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "upgrade";
    }

    # 上传文件代理到 backend
    location /uploads/ {
        proxy_pass http://127.0.0.1:4000/uploads/;
        proxy_http_version 1.1;
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;

        # 缓存静态文件
        proxy_cache_valid 200 1d;
        expires 1d;
    }

    # 其他请求代理到 frontend (3000)
    location / {
        proxy_pass http://127.0.0.1:3000;
        proxy_http_version 1.1;
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;

        # Next.js HMR 支持（开发环境）
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "upgrade";
    }
}